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Praziquantel for Cats

By | Last Updated: 22nd February 2023

What is Praziquantel and how does it work in cats

Praziquantel is a drug prescribed by veterinarians for the treatment of tapeworms in cats. The drug works by effectively arresting the tapeworms’ ability to hinder the cat’s digestion [1].

Praziquantel in combination with pyrantel pamoate (Drontal) also helps in removing large roundworms, and hookworms in cats. [8]

Quick Information


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Generic name: Praziquantel

Brand names: Droncit, Drontal

FDA approved: Yes [5]

Type: Anthelmintic drug

Who can take it: Cats, dogs, most animals, including humans [1] [2]

Availability: Veterinary prescription

Available forms: Injection and tablets [6]

Praziquantel dosage for cats: How much praziquantel to give a cat

Make sure to follow the prescription of the vet. Dosage varies based on the size, weight, and medical history of your cat.

For animal tapeworm, 23 mg tablets are usually prescribed in half to cats weighing 4 lbs or less. For those weighing between 5-11 lbs, one whole tablet may be prescribed, while cats weighing more than 11 lbs may be given 1½ tablets [4].

It is usually not prescribed for kittens less than 6 weeks of age.

How long does it take to work

It starts the process of deworming after the first administration and subsequently eliminates tapeworms in their entirety within 3 weeks. This, however, depends upon the cat’s physiological characteristics, with some felines needing up to 5-6 weeks to get completely dewormed [7].

Using praziquantel for pregnant or nursing cats

Even though the drug has not been found to cause any toxicity or serious negative effects in pregnant or nursing cats, it is always advisable to inform your vet about it [3].

Side effects of praziquantel in cats

Watch out for the following side-effects after administering praziquantel to your cat [1]:

  • Diarrhea
  • Loss of appetite
  • Tiredness and lethargy
  • Vomiting
  • Pain around the site of the injection
  • Drooling

Signs of praziquantel overdose

If you find any of the side effects persisting, it is possible that there might have been an overdose. Immediately contact your veterinarian or call the ASPCA Animal Poison Control Center Helpline (1-888-426-4435).


    1. Praziquantel – Petmd.com
    2. Praziquantel – Web.stanford.edu
    3. Praziquantel Dosage for Cats – Cuteness.com
    4. Droncit  Feline Tablets – Drugs.com
    5. Praziquantel Cats – Web.stanford.edu
    6. Praziquantel for Dogs and Cats – Petplace.com
    7. How Long Does it Take for a Cat Dewormer to Work – Entirelypets.com
    8. Drontal Tablets – Drugs.com

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